Check the listing for details. Roland E-X50 61-key Arranger - Black. Condition: New. Listed at 599.99 USD. An Arranger for Musical Development and Entertainment Put the Roland E-X50 61-key Arranger into the hands of ambitious learners and they'll benefit from musical improvement and enriching entertainment. The nearly 700 included tones, encompassing various pianos, electric pianos, orchestral instruments, and world sounds find excellent sound through the E-X50’s powerful onboard stereo speakers. A wealth of included features like auto-accompaniment, a custom style converter, recording, and Bluetooth set the Roland E-X50 apart as an arranger that builds a solid foundation for musical skill development, in addition to sticking with users of intermediate levels as well. Players will find the 256-note polyphony provides them with a wide canvas for experimentation.